87715560 has 128 divisors (see below), whose sum is σ = 279624960. Its totient is φ = 21964800.

The previous prime is 87715553. The next prime is 87715577. The reversal of 87715560 is 6551778.

It is a super-2 number, since 2×87715560² = 15388038932227200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168100 + ... + 168620.

It is an arithmetic number, because the mean of its divisors is an integer number (2184570).

Almost surely, 2^87715560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87715560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139812480).

87715560 is an abundant number, since it is smaller than the sum of its proper divisors (191909400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87715560 is a wasteful number, since it uses less digits than its factorization.

87715560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 87715560 is about 9365.6585459860. The cubic root of 87715560 is about 444.3162668335.

The spelling of 87715560 in words is "eighty-seven million, seven hundred fifteen thousand, five hundred sixty".